Friction-drive-controlling mechanism



Oct. 23, 1923. 1,471,717

M. AXlLROD FRICTION DRIVE coNTRoLmfm MECHANISM Original Filed April 21 {1920 INVENTOR:

MT 55. BY

M WW 17 7 7 ATTORNEYS.

enlarged circular portionel near'it s upper end having an opening therethrough, as

indicated. In this opening there is s'wiveled" The arm 40 is provided at its upper end with" a cross head or T-head portion O which extends transversely of and; at .an obtuse angle 'with respect to the axis of the shaft 31; The saidcross head or T hea d portion is provided at its outer edge portion withan upwardly extending. flange por tion 51 which is provided with notches 52 with which: a plunger. 53 isheld infengagenientby a spring 54;. The plunger and Spring are mounted in a socket or seat 55 V in a lug or projection 56 which projects laterallyfr'oni a lever 60 pivoted at its lower endito the, projection The lower end of the socket 55 opens into'a notch '61 in the lower sideiof the projection 56 into which notch the flange 5.1Qexte-nd s. The outer side ofsaid notch engages with the outer surface of the flange 51 while the inner side thereof engages with theinner surface of said flangel; These surfaces constitutecams. The lever .60 is mounted to swin'goin. a vertical plane atfright angles to the axis, of the. shaft 31. It will be apparent that when said lever is moved back and forth about its pivot-with the notch 61 in engagement withthe flange 51, the arm 40 willbe swung back and forth upon its pivot to cause slidingin-a-ndv OUhTIlOVQInQIlt of the shaft 31. This is due to the inclined relation of the cross head or bar and of the flange 51 to theaxis ofthe shaft 31. vAs the lever 60 is moved back and forth the plunger 53 slides from notch to notch 52. p

c Inorder to assist in forcing "and holding the arm 10 outwardly, I- have provided an expansile spring '65 one end of which is seated in a socketin a bracket, 66 upon the bearing 32 while the other bears against the extreme upper end portion, of the arm 40, being held in place by a projection 67 extending inwardly therefrom.

V I claim: I

1.In a machine of the character described. the combination of a longitudinally movable shaft, an arm pivotally supported and extending. transversely of said'shaft and having operative connection therewith, said arm being adaptedto bemoved back and forth about its pivot in thedirection of the length of said shaft,; a member adapted to be movedback and forth transversely of said shaft, and means-intermediate said arm and said member whereby the back and forth movements ,ofsa-id member cause back and forth movements of said arm to cause longitudinal movements of said shaft. 2. In a machine of the character described, the combination of a longitudinally movable shaft, an arm pivotally supported and .extending transversely of said shaft and hav-.

ing operative connection" therewith, a pivot forsaid arm, the said pivot being situated a distance from said shaft and extending relation to the said shaft, andfnieans for operatively connecting an intermediate portion of the saidlever to the said. arm where by rocking 'movements of the said lever about its pivot effect rocking movements of the said arm about its pivot whereby longitudinal movement of the said shaft is effooted.

3. In machine of the character described, the combination of a longitudinally movable shaft, an arm pivotally supported and extending transversely of said shaft and having operative connection therewith, said arm having a part provided with parallel cam surfaces on opposite sides thereof, said surfaces extending transversely of an d at obtuse angles withrespect tootl e axis of said shaft, and movable means in engagement with said-surfaces to effect movements of said arm about its pivot to cause longitudinal movements of said shaft in one direction or the other;

4:. In a machine of the character described, the combination of alongitudinally movable shaft, an arm pivotally supported -.at oneend and extending across and beyond said shaft, a swivcled block carried by said arm and having connection with said sh aft, the said armbeiiigprovidedwith a cross barat its upper end, said bar extending transversely ofand forming an obtuseangle' with the said shaft and being provided with cam, surfaces which extend longitudinally of said bar, a lever pivotally supported at one end and extending in the same direction as and in parallel relation to the said arm,

said lever being provided with means for engaging the said cam surfaces whereby movement of the said lever upon its pivot effects in and out movements of the said arm to cause said shaft;

5. In a machine of the character de scribed, the combination of a longitudinallongitudinal-movements of. the

'ly movable shaft,,an arm pivot-ed atone end a distance to one side of one end of said shaft, said arm extending across and beyond the said shaft, a swiveled member carried by c said arinthroughwhich a reduced endportion of'the said shaft extends,- a thrust hearing upon the said reduced end, portion against which the said swiveled member is adapted to contact, cams carried upon said V 9 of the said shaft.

arm, a lever pivoted upon a pivot the axis of which extends at right angles to the pivot of said arm whereby the said arm and lever are movable in planes at right angles to each other, and the said arm being provided with means for engaging the said cams whereby movement of said lever upon its pivotcauses movement of the said arm and the said shaft.

. 6. In a machine of the character described, the combination of a longitudinally movable shaft, an arm pivoted at one end and extending transversely of said shaft, said arm being'provided with a swinging member having connection with the said shaft, and the said arm being provided, at its outer swinging end with a cross bar which extends transversely of and at an obtuse angle with respect to the saidshaft,.

said bar being provided with oppositely disposed parallel cam surfaces, a lever pivoted upon a pivot which extends at right angles to the pivot of the said arm, said pivot being provided with a projection having a notch therein the Opposite edges of which engage the respective cam surfaces whereby movement of said lever upon its pivot effects pivotal movement of the said arm and consequent longitudinal movement 7. In a machine of the character described, the co mbiination of a longitudinally movable shaft, an arm pivoted at one end and extending transversely of and across the said shaft, said arm being provided with a swiveled member having connection with said shaft and also being providedwith a crossbar upon its outer swinging end, said cross bar having a flange which extends a transversely of and at an obtuse angle with respect to the said shaft, a lever pivoted at one end upon a pivot extending at right angles to. the pivot of the said arm, said forth of the said otal connection with said shaft and the said arm also having a horizontally arranged cross bar at its'outer end, said bar being provided with horizontally extendin cam surface-s, said surfaces occupying vertical planes which form obtuse angles With the axis of the said shaft, and a lever supported upon -a pivot which pivot extends at right angles to the pivot of said arm, said lever being provided with a projectiona distance from its pivot,.which projection is provided] with means for engaging the said cam sur-' faces whereby upon movement oflthe said lever back and forth upon its pivot back and forth movementsof the said armare effected tocause back andforth longitudinal movement of the said shaft. 7 V

In testimony that I claim the foregoing as my invention I have hereunto signed my name this 17th day of A ril, A. D., 1920.

. 7 MEY R AXILROD. 

